There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Tigers can see 6 times better at night than humans.
305
Your fingernails grow faster in summer.
744
Only humans shed emotional tears.
331
The human body contains over a billion miles of DNA.
147
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human eye blinks an average of 4,200,000 times a year.
233